Create a message from a blank form, no capture message or interaction?

Summary:

I know that when I create a notification template, I can check "capture message" or "capture interaction" and then keep the history of the message,

but how does it work when I create a message from a blank form, is it possible de keep it in the Message ou Interaction Tab?

Content (required):

I know that when I create a notification template, I can check "capture message" or "capture interaction" and then keep the history of the message,

but how does it work when I create a message from a blank form, is it possible de keep it in the Message ou Interaction Tab?